<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" controls-position="right" min="0"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>

      <!-- 讲师头像：TODO -->
      <!-- 讲师头像 -->
      <el-form-item label="讲师头像">

        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像
        </el-button>

        <!--
    v-show：是否显示上传组件
    :key：类似于id，如果一个页面多个图片上传控件，可以做区分
    :url：后台上传的url地址
    @close：关闭上传组件
    @crop-upload-success：上传成功后的回调 -->
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>

      </el-form-item>

      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>
<script>
  import  teacherApi from '@/api/teacher/teacher'
  import ImageCropper from '@/components/ImageCropper'
  import PanThumb from '@/components/PanThumb'

  export default {
    components: { ImageCropper, PanThumb },
    data() {
      return {
        teacher: {
          name: '',
          sort: 0,
          level: 1,
          career: '',
          intro: '',
          avatar: ''
        },
        imagecropperShow:false,
        saveBtnDisabled:false,
        imagecropperKey:0,
        BASE_API:process.env.BASE_API,
        saveBtnDisabled: false // 保存按钮是否禁用,
      }
    },
    methods: {
      //关闭上传弹框
      close(){
        this.imagecropperShow=false;
        this.imagecropperKey=this.imagecropperKey+1
      },
      //上传成功
      cropSuccess(data){
        this.teacher.avatar=data.url
        this.imagecropperKey=this.imagecropperKey+1
        this.imagecropperShow=false
      },
      //根据讲师id 查询讲师
      getInfo(id){
        teacherApi.getById(id).then(r=>{
          this.teacher=r.data.eduTeacher;
        })
      },
      saveOrUpdate() {
        this.saveBtnDisabled = true
        if (!this.teacher.id) {
          this.saveTeacher()
        } else {
          this.updateData()
        }
      },
      // 保存
      saveTeacher() {
          teacherApi.save(this.teacher).then(r=>{
            this.$message({
              type:'success',
              message:'新增成功!',
            })
            this.$router.push({ path: '/teacher/table' })
          })
      },
  // 根据id更新记录
  updateData() {
    this.saveBtnDisabled = true
    teacherApi.updateById(this.teacher).then(r => {
      return this.$message({
        type: 'success',
        message: '修改成功!'
      })
    }).then(r => {
      this.$router.push({ path: '/teacher/table' })
    })
  },
      init(){
        if (this.$route.params && this.$route.params.id) {
          const id = this.$route.params.id
          this.getInfo(id)
        }else {
          this.teacher={}
        }
      }
    },
    created() {
      this.init()
    },
    watch:{
      $route(to,from){
        this.init();
      }
    }
  }
</script>
